shell: remove environment commands

The environment was drafted but not actually used, so this commit
removes it.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Grzegorz Daniluk <grzegorz.daniluk@cern.ch>
Acked-by: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>

shell/environ.c

-/*
- * This work is part of the White Rabbit project
- *
- * Copyright (C) 2012 CERN (www.cern.ch)
- * Author: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
- *
- * Released according to the GNU GPL, version 2 or any later version.
- */
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-#include <wrc.h>
-#include "shell.h"
-
-#define SH_ENVIRON_SIZE 256
-
-/* Environment-related functions */
-
-static char env_buf[SH_ENVIRON_SIZE];
-
-void env_init()
-{
-	env_buf[0] = 0xff;
-}
-
-static char *_env_get(const char *var)
-{
-	int i = 0;
-	while (i < SH_ENVIRON_SIZE && env_buf[i] != 0xff) {
-		if (env_buf[i] == 0xaa
-		    && !strcasecmp((char *)env_buf + i + 1, var))
-			return (char *)env_buf + i;
-
-		i++;
-	}
-
-	return NULL;
-}
-
-char *env_get(const char *var)
-{
-	char *p = _env_get(var);
-
-	if (!p)
-		return NULL;
-
-	return p + 2 + strlen(p + 1);
-}
-
-static int _env_end()
-{
-	int i;
-	for (i = 0; i < SH_ENVIRON_SIZE; i++)
-		if (env_buf[i] == 0xff)
-			return i;
-	return 0;
-}
-
-int env_set(const char *var, const char *value)
-{
-	char *vstart = _env_get(var), *p;
-	int end;
-
-	if (vstart) {		/* entry already present? remove current and append at the end of environment */
-		p = vstart + 1;
-		while (*p != 0xaa && *p != 0xff)
-			p++;
-
-		memmove(vstart, p, SH_ENVIRON_SIZE - (p - env_buf));
-	}
-
-	end = _env_end();
-
-	if ((end + strlen(var) + strlen(value) + 3) >= SH_ENVIRON_SIZE)
-		return -ENOMEM;
-
-	p = &env_buf[end];
-
-	*p++ = 0xaa;
-	memcpy(p, var, strlen(var) + 1);
-	p += strlen(var) + 1;
-	memcpy(p, value, strlen(value) + 1);
-	p += strlen(value) + 1;
-	*p++ = 0xff;
-
-	p = env_buf;
-
-	return 0;
-}
-
-static int cmd_env(const char *args[])
-{
-	char *p = env_buf;
-
-	while (*p != 0xff) {
-		if (*p == 0xaa)
-			mprintf("%s=%s\n", p + 1, p + strlen(p + 1) + 2);
-		p++;
-	}
-
-	return 0;
-}
-
-DEFINE_WRC_COMMAND(env) = {
-	.name = "env",
-	.exec = cmd_env,
-};
-
-
-static int cmd_saveenv(const char *args[])
-{
-
-	return -ENOTSUP;
-}
-
-DEFINE_WRC_COMMAND(saveenv) = {
-	.name = "saveenv",
-	.exec = cmd_saveenv,
-};
-
-static int cmd_set(const char *args[])
-{
-	if (!args[1])
-		return -EINVAL;
-
-	return env_set(args[0], args[1]);
-}
-
-DEFINE_WRC_COMMAND(set) = {
-	.name = "set",
-	.exec = cmd_set,
-};

shell/shell.c

@@ -125,7 +125,6 @@ int shell_exec(const char *cmd)
 
 void shell_init()
 {
-	env_init();
 	cmd_len = cmd_pos = 0;
 	state = SH_PROMPT;
 }

shell/shell.mk

 obj-y += \
 	shell/shell.o \
-	shell/environ.o \
 	shell/cmd_version.o \
 	shell/cmd_pll.o \
 	shell/cmd_sfp.o \